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John Dalton was born
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John Dalton discovered
John Dalton proposed that all matter is composed of very small things called atoms. -
John Dalton died
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JJ Thomson was born
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Robert Millikan was born
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Ernest Rutherford born
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Niels Bohr was born
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JJ Thomson
discovered the electron by experimenting with a Crookes, or cathode ray, tube -
Robert Millikan did the oil droplet experiment
Determined the size of electrons. -
Ernest Rutherford discovered alpha and beta rays
the first to discover that atoms have a small charged nucleus surrounded by largely empty space, and are circled by tiny electrons -
Neils Bohr he came up with the liquid droplet theory
Discovered the nucleus and development an atomic model -
JJ Thomson died
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Robert Millikan died
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Neils Bohr died
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Ernest Rutherford died
